526 | Time of travel on the [River] Chertsey Bourne under low flow conditions |
527 | Regional fishing guide : a guide to day ticket waters in the Midlands |
528 | Non-compliance of the Bidwell Brook with river quality objectives |
529 | An investigation into the sewage system and storm overflow at Beer (1997) |
530 | Flood warning information for the Hertfordshire/Essex border : River Stort catchment |
531 | River Axe Fish Study - Evaluation of Fish Movements in the Estuary |
532 | An environmental snapshot for the Anglian region 2003 |
533 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
534 | Identification of water quality problems in the Strat and Neet catchments |
535 | The effects of fishing at low water levels |
536 | 1967 - George and Gideon cutting mbati for the bedroom block. |
537 | 1967 - Quakers arriving on the shore of L.George. |
538 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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539 | Method for the assessment of river water quality using benthic macroinvertebrates |
540 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
541 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
542 | The greening of Grasmere: its plankton periodicity in 1988 |
543 | A strategic review of the petroleum refinery Industry Sector |
544 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
545 | Contribution of small streams to potential fish production in the Conwy catchment |
546 | NRA strategy for reducing the concentration of pesticides in controlled waters |
547 | Low-cost modifications of the Crump weir to improve fish passage |
548 | Policy and practice for the protection of floodplains |
549 | The Yarrow catchment : recommendations for statutory water quality objectives |
550 | Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere |